c25a6366b6b140caeff62f12263a2cc717366499f27202e4acde10b5cedcfef6

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
08/01/2024, 11:49

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General

Target

4b5a230ac02aea04b6e53a345a925865.dll
Size

168KB
MD5

4b5a230ac02aea04b6e53a345a925865
SHA1

42338889b5f0a3a26e360b9d9d8e38f699542e61
SHA256

c25a6366b6b140caeff62f12263a2cc717366499f27202e4acde10b5cedcfef6
SHA512

9db2b25ad8ce6327846d0a01a24b582a7d48fbfb41f87d170904f64752f9f0ab46b1db20f09132abddccb92b734301421282b4e93c7be5ae44f9d14df5cbf75a
SSDEEP

3072:xAzmI2hRwVG1Av6T4odBeUoqdtfLb6S2I1BMUGLg:8SZGvRmRoAtfLb6IBMUGL

Score

6^/10

adware stealer

Malware Config

Signatures

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}	regsvr32.exe

Modifies registry class 8 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}\ = "TravelerSurfer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4b5a230ac02aea04b6e53a345a925865.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38}\webbrowser = "{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38}\wversion = "3.8.6"	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}	regsvr32.exe
Key created	\REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{686488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32	regsvr32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16
PID 2928 wrote to memory of 1660	2928	regsvr32.exe	16

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4b5a230ac02aea04b6e53a345a925865.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\4b5a230ac02aea04b6e53a345a925865.dll
  2⤵
  - Installs/modifies Browser Helper Object
  - Modifies registry class
  PID:1660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Browser Extensions

T1176

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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